Experiments run by Department of Defense aimed at proving, in a tangential way, the US knows how to make fusion bombs. The use of lasers in a batch process has no scalable means to usable electrical power, EVER.
Philo Farnsworth invented the Farnsworth Fusor in the early 1960’s. It created fusion using Cathode Ray Tubes instead of lasers. Unfortunately, Farnsworth died before he came close to breakeven energy.